I’ve had a fixed gear bike for a few months, and on a friend’s recommendation, picked up the Trixie. Pedro’s has found a way to cram just about every tool needed to work on a fixed gear bike into one tool, whether it’s a roadside emergency or you are working on your bike in the garage.
It’s a lockring wrench – fixies have a lockring that keeps the rear cog in place. Prior to owning the Trixie, I went through every tool I had in my garage in an attempt to tighten a loose lockring. I ended up on a trip to the bike shop.
It’s a 5mm Hex wrench – useful for handlebar and seat adjustments, and the jackposts for a water bottle cage. I hear it can be used on brakes too, although no self-respecting fixie rider uses them.
It’s a 15 mm box wrench – you need one to tighten the tires to the frame. No quick-releases on my bike!
It’s also an 8, 9, and 10 mm box wrench thanks to the slot in the handle. The 8mm is handy for chain tensioning, but I haven’t needed the 9 or 10mm yet.
It’s durable – 5mm thick treated steel – and portable. It can be mounted on the water bottle jackposts and comes with wingnuts to replace the jackposts if you so desire. I personally secure mine to the underside of the seat.
Lastly, and most important, is the included bottle opener, so you can reward yourself after the job and ride are complete.